{"product_id":"carrier-ga2aad036070aaja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GA2AAD036070AAJA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model GA2AAD036070AAJA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part# \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier GA2AAD036070AAJA\u003c\/strong\u003e packaged unit. The control transformer steps down 120V line voltage to the 24V signal required by your thermostat, contactor coil, and all low-voltage control circuits. When this transformer fails, the entire control circuit loses power — your thermostat goes blank, the system refuses to respond to any call for heating or cooling, and no staging sequence can begin. A blown transformer is also often a symptom of a downstream short, so always inspect low-voltage wiring before installing the replacement.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | Factory-matched OEM part number HT01BC116 | Designed for continuous-duty HVAC control circuit operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound to exact VA and voltage tolerances specified by Carrier engineering. Generic transformers often run under-rated VA, causing premature thermal cutout failure — especially under high-demand multi-zone control loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before proceeding. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before disconnecting. Confirm secondary voltage output with a multimeter before closing the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eGA2AAD036070AAJA\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. If you're unsure of fitment, our HVAC parts team will confirm compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909444456819,"sku":"CARRIE-GA2AAD036070AAJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909444489587,"sku":"CARRIE-GA2AAD036070AAJA-TRANSFORMER-HT01BC116-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01BC116_7148c31b-e026-4d75-91df-cde4d6f3926c.jpg?v=1782941326","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ga2aad036070aaja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}